6-digit VFD Clock with ESP32

The 6-digit VFD Clock design was inspired by the very popular 6-digit Nixie Clock. We opted to use IV-22 VFD tubes for the digits together with DM160/CV6094 tubes for the colon separators. Both types of tubes are still available in relatively large quantities. As the IV-22 VFD tubes have the same dimensions as the IN-12 nixie tubes used in the original clock, we decided to use the same setup and dimensions for the new design. With a similar acrylic enclosure the clock looks very familiar, yet different.

The heart of the clock consists of an ESP-32-DevKitC module from Espressif. Time is synchronized via NTP over a WIFI connection with the internet. The settings of the clock can be altered via USB or via the WIFI network connection.